Controller.



1A. J. LOGHI-N.'

CONTROLLER. lMPLIOATIQN FILED ML2?, 1911.

Patented. Dep. 24, 191,2.

SHBTs-SHBLT 1.

A.' J, LOGU'IN.-

CONTROLLER. APPLICATION H Illj MAR. 27, 1911,

{ Patelnted Dec. 24, 1912.

l4.SHEETS-SHEBT 2.

lA.. J. LOGUIN.

CONTROLLER.

APPLIUATION'FILED 1111111.27, 1911. Patented Dec. 24, 1912.

'Q A. J. LOGUIN.

Y CONTROLLER. APPLIOVATIGN FILED 111111.27. 1911.

Patented Dec. 24, 1912.

4 SHEETS-SHEET 4. l

HHH

UNITED sTATEs PATENT oEEIoE. ALEXANDER J. IlOGUIN, VOIEVVESJ ALLIS, WISCONSIN, ASSIGNOR TO ALLISCI-IALLVIER/Sl COMPANY, A CORPORATION OF NEW JERSEY.

CONTROLLER.

T0 all wiz-0m it may concern.' r

Be it known that I, ALEXANDER J. LoGUIN, a subject of the Czar of Russia, residing at `Test Allis, in the county of Milwaukee and State of visconsim have invented certain new and useful Improvements in Controllers, of which the following'is a full, clear, and exact specification.

This invention relates to controllers for electric motors, and more particularly to protective devices therefor.

In operating starting devices for some types of motors, especially potential starters for induction motors, it is often undesirable that the controller be moved backward from a running position to a starting position.- To this end controllers have been designed which move directly from the running to the off position without passing through the starting positions. Controllers or potential starters have also been designed for prevent ing the controller from moving backwardl from an oli position directly to a running position, and also for rendering it impossible for the operator to leave the controller in a starting position, arrangements being provided for automatically moving the controllerbackward to oit' position if it is released by the operator while it is in a starting position. It may also sometimes be desirable to have means whereby such a cony trollermay be automatically moved forward from running position to off position in case abnormal conditions, such as no-voltage7 or an overload, arise.

It is the object of the present invention to improve controllers embodying the above enumerated desirable means for the Various purposes set forth.

The various novel features of this inven'-v tion Will be described in the following speci cation, and particularly set forth in the appended claims.

The invention is illustrated in the accomproper will not be described herein as they.

Specification of Letters Patent.

Application filed March 27, 1911. Serial No. 617,213.

Patented Dec. 24,1912.

form no part of my. present invention and are unnecessary to an understanding thereof.

A three-phase induction motor M is here shown and is supplied with current, through a suitable operating drum 10 and contact fingers 17 cooperating therewith, from -the three-phase mains f, g, and it. The controller drum 10 is designed to make the.

`proper connections for starting an electric y of contact lingers being on opposite sides of the drum. The normal operation of the drum is continuously in the same direction,- which is counter-clockwise in the arrangement shown. l

Mounted 4on the shaft 15 is a cam 16 which, is adapted to be engaged by a roller 18 secured -in a spring-pressed lever 19, the spring 20 having its ends connected respectively to the lever 19 and a portion 21 of the controller casing., This arrangement formsA a handle returning device which biases the movable member of the controller in one direction when on one side of running position `and in anotherdirection when in running position or on the other side thereof. Also mounted on and secured to the shaft 15 torevolve therewith is a disk 22. This disk is provided with a plurality of diametrically opposite radially extending holes 23 in each of which is located a plunger or reciprocatory member 24 normally pressed radially outward by a spring 25 which is located radially inward from or behind the plunger. Arranged concentricl with and surrounding the disk 22 is a supporting frame 26 secured to lugs 27 formed integrally with the transformer casing 28v and held in a fixedl position by nuts 29. 'This supporting frame is provided' with a 26. The bored. portion of the supporting frame 26 is provided with notches 31 marking the oft and startingpositions of the controller and Which are adapted to receive the pointed ends of the plungers 24 When the controller is in off and starting positions. The supporting frame 26 also forms a stop by having a hole 32 therein which is adapted .Y to receive the spring pressed'plungers 24 Willbe forced by the action of the spring 36.

against the plunger or reciprocatory mem ber 24 forcing it out of the hole 32 to permit the controller to be moved forward into oft' position by the handle returnin-g device.

l'Secured to the pin 34 is a pair of links 37 which arel pivotally secured to alatch 38. In running position as shown inv Fig-1 the latch 38 and block 33 are held against the tension of the spring by a trigger 42 which forms one end of an arm 43. rIhe arm 43 is engaged by a pin 44 secured in a lever 44a having a forked portion 45. One end of the lever 44forms an armature .vhich is attracted and held to the core of a no-voltage magnet 40 against the tensionl of the spring 46 under normal operating conditions. The arm 43 is located in the path of a pin 47 on the core '48 of an overload "magnet 41 and said arm is adapted to be actuated under certain conditions to be referred to presently totrip the trigger 42.

In Fig. 2 the controller is shown in od position with the reciprocatory members or plungers 24 engaging the notches 31 vin the supporting frame 26. ArsV the handle is moved in a clockwise direction the cam 16 and the disk 22 which are secured to the shaft 15 are rotatedv and by means of the roller 18 engaging the surface of the cam 16, the lever 19 is 'moved about its pivotal point-stretching the spring 2O and continuously storing energy therein until it has reached a maximum, When the' controller has reached its running position,v as shown in Fig. 1. Also during the movement of the controller from the od to running position one of the cams 39, each comprising tvvo sheet metIal pieces fastened to opposite sides of the disk 22, engages the roller 35 .and

vforces said roller 35 with its block 33 a/Way from the bored portion of the supporting frame 2,6 against the tension of the lspring 36.1 Bythe time the controller has reached roaefiio a running position, one of the cams 39 will` have raised the block 33 and latch 33 sufficiently so that the trigger 42 may pass under the latch 3S to hold said latch in its normal setoperating position. The trigger will pass under said latch due to the Weight of the arm 43A providing there is not an overload on the line. If there is an over load the arm 43 will be held up by the pin 47 so that it will be impossible for the trigger 42 to move under the latch 38 and therefore impossible for the controller to stop in a running position. has reached its running positionl the cam 39 which has just raised the latch 33, will be out of engagement with the roller 35, and due to the action of the spring 25, the plungerv 24 Will be forced into the stop opening 32of the supporting frame 26.

If an overload occurs on the line, with the controller in running position as shown in Fig. 1, the core 43 will be drawn 'int-o the body of the overload magnet 41, the pin 47 engaging the arm and forcingthe trigger 42 out of engagement with the latch 33. Due to the stored. energy in the spring 36,

lVhenthe controller y the block 33 is forced against the plunger 24, forcing the plunger out of the vhole 32, and, due to the stored energy in the spring 20 the controller is dashed forward into off position. On the other hand, with the controller in running position, if 11o-voltage conditions arise, the spring 46 overcomes the diminished strength of the no-voltage magnet 40, drawing the lever 44n away from the magnet and through the pin 44 forces the trigger 42 outof engagement with the latch 38 with the same result, namely, forcing the plunger 24 out of the hole 32 and permitting Vthe handle returning device to move the conn .troller forward into oil' position. It istherefore seen that the controller can be. automatically moved to off position when in runningV position upon the cccurrence'of all abnormal conditions on the circuit. The trigger 42 can Yalso be manually ino-ved out of engagement With the latch 38, thereby permittingthe controller to be moved into off position. This lmanual operation is effected by making the arm 43 long enough so that it will eX-tend'through an opening 50 in the casing of the controller.

It is evident that there may be many modifications in the precise form and arrangement .herein shown and described, and I aim to cover all such modifications which do not involve a departure from the spirit and scope of vmy invention as set forthv in the appended claims.

What I claim as new is:

1. In a controller, a movable contact member, an actuator therefor, and means independent of said actuator for locking said movable contact member in an operative position, said means including a revolubly i mounted spring-pressed plunger 'independent of said contact member. A

2. In a controller, a movable contact member, an actuator' therefor, and means lnde- Ipendent of said actuator for locking said movable Contact member in an operative position, said means including a revolubly mounted reciprocatory member independent of said contact member.

3. In a controller, a movable contact member, an actuator therefor, and means independent of said actuator forA locking said movable contact member in an operative po sition, said means including a revolubly mounted reciprocatory spring-pressed mem? ber vand a stationary cooperating member associated therewith.

4. .In a controller, a movable'contact member, an actuator therefor, and means independent of said actuator for locking said movable contact member in an operative position, said means including a revolubly mounted spring-pressed plunger independent of said contact member, and means for releasing said movable contact member from said locking means. Y

5. In a controller, a movable contact memi ber, an actuator therefor, and means independent of said actuator for locking said movable'contact member in an operative po sition, said means including a revolubly mounted spring-pressed plunger, and manually operated means for releasing said movable contact member from said locking means. 4

6. In a controller, a movable contact member, an actuator therefor, and means independent of said actuator for locking said movable contact member in an operative position, said means including a revolubly mounted spring-pressed plunger independent of said contact member, and automati: cally operated means for releasingsaid movable contact member from said locking means. f 4 1 7. In a controller, a movable contact member, an actuator therefor, and means independent of said actuator for locking-said movable Contact member in an operative position, said means including a revolubly mounted spring-pressed plunger independent of said contact member, and means responsive to a reduction in voltage for releasing said movable contact member from said locking means.

8. In a controller, a movable Contact member, an actuator therefor, and means independent of said actuator for -,locking said movable Contact member in an operative position, said means including a revolubly mounted'spring-pressed plunger, and means responsive to an overload for releasing said movable contact member from said locking means.

9. In a controller, a movable contact member, an actuator therefor, and means independent of said actuatorI for locking said movable contact member in an operative position, said means including a revo'lubl;T mounted spring-pressed plunger independent of said contact member, and means responsi've to abnormal circuit conditions for releasing said movable contact member from said locking means. a

10. In a controller movable from running position to off position Without passing through starting position, an actuator-for moving said controller to a running position, and means independent of the actuator and including a revolubly mounted reciprocatory member for locking the movable member of said controller in running posiin anotherl direction when in runniiigposition or on the other side thereof, means for actuating said controller, and means 1ndependent of said actuating means and including a revolubly mounted springpressed member for locking said controller in running position.

13. In a controller biased in one direction When on one side of running position and in another direction when in running position'or on -the other side thereof, means ,for actuating said controller, and means independent of said actuating means and including a revolubly mounted springepressed member for locking said controller in an operative position, and means for said locking means.

14. In a controller, contact lingers, a ro tatable drum' cooperating therewith, a shaft through which motionV is given to said drum, a disk mounted on said shaft and having a plunger thereintolock said controller in an operative posit-ion, and means for unlocking said controller.A

tripping 15..In a controller, contact lingers, a rotatable drum cooperating therewith, a shaft throughwhich motion is transmitted to said drum, a member mounted on said shaft and having an independently movable plunger, a stop adapted to be engaged'by said plunger to lock the `controller in an operative position, andy means foirrdisengaging said' plunger fromsaid stop to permit said controller to be moved to another position.

16. In a controller, contact lingers, a roe i oas ne tatable drum Cooperating therewith, a shaft through which motion is 'transmitted to. said drum, a member mounted on said shaft and having an independently movable plunger,

va stop member adapted to be engaged by ber adapted'under certain conditions to dis y engage said plunger 'from said stop to permit said controller to4 be moved into another position. 1

18. In a controller, .contact fingers, a rotatable drum eoperating therewith, a shaft through which motionis transmitted to said drum, a disk mounted on said shaft and" having an independently movable plunger, a stop member ooncentrieally arranged relatively to said disk member and adapted to bey engaged bysaid plunger to lock the controller in an operative position, and means for disengaging said plunger from said stop member to permit said controller .to move into another position.r4

19. In a controller, contact fingers, arotat-able drum cooperating therewith, a shaft throughwhich motion is transmittedto said drum, a disk associated with said shafta'n'd having an independently movableplunger; a stop member adapted to be engaged by.

said plunger to look the controller in an dperative position, means for disengaging said plunger from said stop to permit said oontrollerto bemov'ed vinto another position, and meanson said disk for moving said disengaging means to permit said plunger to hold the controller in an operative position.

20. ln a controller, contact ngers, a rotatabledrum ooperating therewith, a member having independently movable means, a stop member having independently movable means and adapted tobe engaged by said independently movable means of said irst member to lock the controller in an opera-y tive position, means on said first member for moving said independently movable` means of said stop member to permit said inde pendently movable means of said first member to hold the controller in an operative position,-said movable means of said stop member beingadapted to disengagesaid movable means of said first member from said operative means for setting said members to lock said controller in an operative position, an automatically operated means for 'actuating said members to unlock the controller in said operative position.

Milwaukee, Wis., March 22, 1911. ln testimony whereof l axmy signature, in the presence of two witnesses.

'ALEY NBER J. LOGUIN.

lWitnesses Giras. L. BYRON, Ro. E. STOLL. 

